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Finding the Fourth Proportional to 10,010.60, 14,979.90 and 7,418.60

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Solution

The fourth proportional to 10,010.60, 14,979.90 and 7,418.60 is: 11,101.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,010.60 : 14,979.90 = 7,418.60 : x
  2. Step 2: Convert to fraction form
    10,010.60/14,979.90 = 7,418.60/x
  3. Step 3: Cross multiply
    10,010.60x = 14,979.90 × 7,418.60
  4. Step 4: Simplify right side
    10,010.60x = 111,129,886.14
  5. Step 5: Solve for x
    x = 111,129,886.14/10,010.60
  6. Step 6: Final answer
    x = 11,101.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.